{
  "schema_version": "1.4.0",
  "id": "GHSA-43qf-4rqw-9q2g",
  "modified": "2025-05-17T18:55:57Z",
  "published": "2025-03-20T12:32:45Z",
  "aliases": [
    "CVE-2024-6866"
  ],
  "summary": "Flask-CORS vulnerable to Improper Handling of Case Sensitivity",
  "details": "corydolphin/flask-cors version 5.0.1 contains a vulnerability where the request path matching is case-insensitive due to the use of the `try_match` function, which is originally intended for matching hosts. This results in a mismatch because paths in URLs are case-sensitive, but the regex matching treats them as case-insensitive. This misconfiguration can lead to significant security vulnerabilities, allowing unauthorized origins to access paths meant to be restricted, resulting in data exposure and potential data leaks.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "flask-cors"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.0.0"
            }
          ]
        }
      ],
      "database_specific": {
        "last_known_affected_version_range": "<= 5.0.1"
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-6866"
    },
    {
      "type": "WEB",
      "url": "https://github.com/corydolphin/flask-cors/commit/eb39516a3c96b90d0ae5f51293972395ec3ef358"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/corydolphin/flask-cors"
    },
    {
      "type": "WEB",
      "url": "https://github.com/corydolphin/flask-cors/blob/4.0.1/flask_cors/extension.py#L195"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/808c11af-faee-43a8-824b-b5ab4f62b9e6"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-21T22:16:04Z",
    "nvd_published_at": "2025-03-20T10:15:34Z"
  }
}